So I've had this problem for a few months, where my Leon FR 184 DSG (44K miles, FSSH) doesn't get up to normal running temperature of 90 degC. I put it to a dealer yesterday, and they said no fault codes logged, and it got up to 90 degC when they ran it in the workshop.
So when I collected it, it was still hot from the workshop, and as I drove off though the evening stop-start traffic , it continued to read a normal 90 degC. As soon as I started moving freely, the temperature rapidly dropped to between 60 and 65 degC - even as I punted it up a steep Motorway hill, where you'd expect it to warm up. So that suggests (to me) it's an "airflow" thing - it gets hot when running stationary, but as soon as moving, the temperature drops off.
I tested that this morning - I took it for a run of a distance where it should have warmed up to 90 degC. But it remained at 60 - 65. When I parked up, I sat stationary, with the engine running at 2500rpm - 3000rpm for 5 or 10 minutes, and the temperature climbed up to 90. I then drove off, and within a mile, the temperature had fallen to 60. So there's definitely something going on where the temperature can't get up to normal when the car is moving. Have I lost a piece of plastic cowling that means there's too much airflow to the engine, maybe? I don't know.
I suppose the only other thing to try would be to go for a drive, holding the car in low gear and high revs - see if it's related to load?
Has anyone else experienced this? I don't want to end up having to get a new Cat or DPF, due to running it for miles not at proper working temperature.
So when I collected it, it was still hot from the workshop, and as I drove off though the evening stop-start traffic , it continued to read a normal 90 degC. As soon as I started moving freely, the temperature rapidly dropped to between 60 and 65 degC - even as I punted it up a steep Motorway hill, where you'd expect it to warm up. So that suggests (to me) it's an "airflow" thing - it gets hot when running stationary, but as soon as moving, the temperature drops off.
I tested that this morning - I took it for a run of a distance where it should have warmed up to 90 degC. But it remained at 60 - 65. When I parked up, I sat stationary, with the engine running at 2500rpm - 3000rpm for 5 or 10 minutes, and the temperature climbed up to 90. I then drove off, and within a mile, the temperature had fallen to 60. So there's definitely something going on where the temperature can't get up to normal when the car is moving. Have I lost a piece of plastic cowling that means there's too much airflow to the engine, maybe? I don't know.
I suppose the only other thing to try would be to go for a drive, holding the car in low gear and high revs - see if it's related to load?
Has anyone else experienced this? I don't want to end up having to get a new Cat or DPF, due to running it for miles not at proper working temperature.